Make directories to search in configurable (and preview with sushi?!)

zig/sdl/hello_sdl.zig

    }
};
const Config = struct {
    var searchDirectories: []const []const u8 = undefined;
    var searchDirectoriesString: []const u8 = undefined;
};
var cmd_buf: [1000]u8 = undefined;
var argv_buf: [100][]const u8 = undefined;
const GoDocRunner = struct {
    fn init() Runner {
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "{s}\x00", .{cmd["s ".len..]}) catch "???";
        return &[_][]const u8{ "ag", "--color", &cmd_buf, "/home/luna/k/the-thing", "/home/luna/t/zig" };
        argv_buf[0] = "ag";
        argv_buf[1] = &cmd_buf;
        for (Config.searchDirectories) |dir, i| {
            argv_buf[2 + i] = dir;
        }
        return argv_buf[0 .. 2 + Config.searchDirectories.len];
    }
};
    fn toArgv(cmd: []const u8) []const []const u8 {
        // FIXME: replace with choice + selection whenever that is implemented
        _ = std.fmt.bufPrint(&cmd_buf, "find ~/k/the-thing ~/t/zig -type f -name '{s}' | head -n1 | tee /tmp/file-search && ([ \"$(wc -l < /tmp/file-search)\" = \"1\" ] && cat \"$(head -n1 /tmp/file-search)\") || echo \"not found\"\x00", .{cmd["file ".len..]}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "find {s} -type f -path '*{s}*' -or -name '*{s}*' | tee /tmp/file-search && ([ \"$(wc -l < /tmp/file-search)\" = \"1\" ] && ((file --mime \"$(head -n1 /tmp/file-search)\" | grep 'text/' &> /dev/null && cat \"$(head -n1 /tmp/file-search)\") || sushi \"$(head -n1 /tmp/file-search)\")) || echo \"not found\"\x00", .{ Config.searchDirectoriesString, cmd["file ".len..], cmd["file ".len..] }) catch "???";
        return &[_][]const u8{ "bash", "-c", &cmd_buf };
    }
};
    const args = try std.process.argsAlloc(gpa);
    defer std.process.argsFree(gpa, args);
    var dirsList = std.ArrayList([]const u8).init(gpa);
    var dirsString = std.ArrayList(u8).init(gpa);
    if (std.os.getenv("SEARCH_DIRS")) |dirsEnv| {
        var dirs = std.mem.split(u8, dirsEnv, ":");
        var dir = dirs.next();
        while (dir != null) : (dir = dirs.next()) {
            try dirsList.append(dir.?);
        }
    } else {
        try dirsList.append("/home/luna/k/the-thing");
        try dirsList.append("/home/luna/t/zig");
    }
    Config.searchDirectories = dirsList.toOwnedSlice();
    for (Config.searchDirectories) |dir| {
        try dirsString.appendSlice(dir);
        try dirsString.append(' ');
    }
    Config.searchDirectoriesString = dirsString.toOwnedSlice();
    defer gpa.free(Config.searchDirectories);
    defer gpa.free(Config.searchDirectoriesString);
    if (c.SDL_Init(c.SDL_INIT_VIDEO) != 0) {
        c.SDL_Log("Unable to initialize SDL: %s", c.SDL_GetError());
        return error.SDLInitializationFailed;
                continue;
            }
            // TODO: indicate if command is still running
            {
                const name = try gpa.dupeZ(u8, command.name);
                const result_text = c.TTF_RenderUTF8_Shaded(font, name, gray, c.SDL_Color{ .r = 0, .g = 0, .b = 0, .a = 255 });